kernel-xen/xen3-patch-2.6.32.9-10

From: Greg Kroah-Hartman <gregkh@suse.de>
Subject: Linux 2.6.32.10
Patch-mainline: 2.6.32.10

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Automatically created from "patches.kernel.org/patch-2.6.32.9-10" by xen-port-patches.py

--- sle11sp1-2010-03-22.orig/arch/x86/include/mach-xen/asm/pgalloc.h	2009-11-06 10:52:09.000000000 +0100
+++ sle11sp1-2010-03-22/arch/x86/include/mach-xen/asm/pgalloc.h	2010-03-22 12:47:01.000000000 +0100
@@ -27,6 +27,11 @@ pmd_t *early_get_pmd(unsigned long va);
 #endif
 
 /*
+ * Flags to use when allocating a user page table page.
+ */
+extern gfp_t __userpte_alloc_gfp;
+
+/*
  * Allocate and free page tables.
  */
 extern pgd_t *pgd_alloc(struct mm_struct *);
--- sle11sp1-2010-03-22.orig/arch/x86/kernel/apic/io_apic-xen.c	2010-03-01 14:44:43.000000000 +0100
+++ sle11sp1-2010-03-22/arch/x86/kernel/apic/io_apic-xen.c	2010-03-22 12:47:01.000000000 +0100
@@ -1626,6 +1626,60 @@ static void __init setup_IO_APIC_irqs(vo
 			" (apicid-pin) not connected\n");
 }
 
+/*
+ * for the gsit that is not in first ioapic
+ * but could not use acpi_register_gsi()
+ * like some special sci in IBM x3330
+ */
+void setup_IO_APIC_irq_extra(u32 gsi)
+{
+	int apic_id = 0, pin, idx, irq;
+	int node = cpu_to_node(boot_cpu_id);
+	struct irq_desc *desc;
+	struct irq_cfg *cfg;
+
+	/*
+	 * Convert 'gsi' to 'ioapic.pin'.
+	 */
+	apic_id = mp_find_ioapic(gsi);
+	if (apic_id < 0)
+		return;
+
+	pin = mp_find_ioapic_pin(apic_id, gsi);
+	idx = find_irq_entry(apic_id, pin, mp_INT);
+	if (idx == -1)
+		return;
+
+	irq = pin_2_irq(idx, apic_id, pin);
+#ifdef CONFIG_XEN
+	if (irq < PIRQ_BASE || irq >= PIRQ_BASE + nr_pirqs)
+		return;
+#endif
+#ifdef CONFIG_SPARSE_IRQ
+	desc = irq_to_desc(irq);
+	if (desc)
+		return;
+#endif
+	desc = irq_to_desc_alloc_node(irq, node);
+	if (!desc) {
+		printk(KERN_INFO "can not get irq_desc for %d\n", irq);
+		return;
+	}
+
+	cfg = desc->chip_data;
+	add_pin_to_irq_node(cfg, node, apic_id, pin);
+
+	if (test_bit(pin, mp_ioapic_routing[apic_id].pin_programmed)) {
+		pr_debug("Pin %d-%d already programmed\n",
+			 mp_ioapics[apic_id].apicid, pin);
+		return;
+	}
+	set_bit(pin, mp_ioapic_routing[apic_id].pin_programmed);
+
+	setup_IO_APIC_irq(apic_id, pin, irq, desc,
+			irq_trigger(idx), irq_polarity(idx));
+}
+
 #ifndef CONFIG_XEN
 /*
  * Set up the timer pin, possibly with the 8259A-master behind.
@@ -3275,12 +3329,9 @@ unsigned int create_irq_nr(unsigned int 
 	}
 	spin_unlock_irqrestore(&vector_lock, flags);
 
-	if (irq > 0) {
-		dynamic_irq_init(irq);
-		/* restore it, in case dynamic_irq_init clear it */
-		if (desc_new)
-			desc_new->chip_data = cfg_new;
-	}
+	if (irq > 0)
+		dynamic_irq_init_keep_chip_data(irq);
+
 	return irq;
 }
 
@@ -3303,17 +3354,12 @@ void destroy_irq(unsigned int irq)
 {
 	unsigned long flags;
 	struct irq_cfg *cfg;
-	struct irq_desc *desc;
 
-	/* store it, in case dynamic_irq_cleanup clear it */
-	desc = irq_to_desc(irq);
-	cfg = desc->chip_data;
-	dynamic_irq_cleanup(irq);
-	/* connect back irq_cfg */
-	desc->chip_data = cfg;
+	dynamic_irq_cleanup_keep_chip_data(irq);
 
 	free_irte(irq);
 	spin_lock_irqsave(&vector_lock, flags);
+	cfg = irq_to_desc(irq)->chip_data;
 	__clear_irq_vector(irq, cfg);
 	spin_unlock_irqrestore(&vector_lock, flags);
 }
--- sle11sp1-2010-03-22.orig/arch/x86/mm/pgtable-xen.c	2009-11-06 10:52:23.000000000 +0100
+++ sle11sp1-2010-03-22/arch/x86/mm/pgtable-xen.c	2010-03-22 12:50:44.000000000 +0100
@@ -10,6 +10,14 @@
 
 #define PGALLOC_GFP GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO
 
+#ifdef CONFIG_HIGHPTE
+#define PGALLOC_USER_GFP __GFP_HIGHMEM
+#else
+#define PGALLOC_USER_GFP 0
+#endif
+
+gfp_t __userpte_alloc_gfp = PGALLOC_GFP | PGALLOC_USER_GFP;
+
 pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
 {
 	pte_t *pte = (pte_t *)__get_free_page(PGALLOC_GFP);
@@ -28,11 +36,7 @@ pgtable_t pte_alloc_one(struct mm_struct
 {
 	struct page *pte;
 
-#ifdef CONFIG_HIGHPTE
-	pte = alloc_pages(PGALLOC_GFP | __GFP_HIGHMEM, 0);
-#else
-	pte = alloc_pages(PGALLOC_GFP, 0);
-#endif
+	pte = alloc_pages(__userpte_alloc_gfp, 0);
 	if (pte) {
 		pgtable_page_ctor(pte);
 		SetPageForeign(pte, _pte_free);
@@ -41,6 +45,23 @@ pgtable_t pte_alloc_one(struct mm_struct
 	return pte;
 }
 
+static int __init setup_userpte(char *arg)
+{
+	if (!arg)
+		return -EINVAL;
+
+	/*
+	 * "userpte=nohigh" disables allocation of user pagetables in
+	 * high memory.
+	 */
+	if (strcmp(arg, "nohigh") == 0)
+		__userpte_alloc_gfp &= ~__GFP_HIGHMEM;
+	else
+		return -EINVAL;
+	return 0;
+}
+early_param("userpte", setup_userpte);
+
 void __pte_free(pgtable_t pte)
 {
 	if (!PageHighMem(pte)) {